Like Chrissa, no-one ever mentioned the war properly - although my Mum did show me a picture of them with 2 German POWs they had befriended and I knew that the road by our house had been built by POW's. It sort of all came together gradually. When I studied History at school - it ended at the build-up to WW1.
I put it all together myself - there was the 'Dambusters' theme on Children's Favourites (or whatever it was called) and lots and lots of old films and then there was reading
When teaching History in the 1990s both WW1 and WW2 were covered, but WW2 was mainly taught in the GCSE course - so it was quite possible that anyone (majority) not taking History GCSE would not know a thing about it.
I put it together myself from radio, films and reading.